Share |In the new version actually there is not much messing to add a meta tag u can directly add ur meta tags below head tag . Well if u see the view source of your website then u will notice that there are also meta tags of blogger which are already mentioned including ur meta tags . But u can override the meta tags of blogger by adding ur meta tag just below the head in templates>Edit html>
So u r done with ur meta tags in new blogger version ! if u have any suggestion plz comment here ..